Hi Mohsin, the problem you described has been already fixed by 606d690
("net/mlx5: fix running without Rx queue").
I guess you see the issue on 19.11 branch, right? Could you please apply this
patch and verify that it fixes the issue for you?
Regards,
Alex
> -----Original Message-----
> From: Mohsin Shaikh <mohsinsha...@niometrics.com>
> Sent: Monday, April 13, 2020 10:47
> To: dev@dpdk.org
> Cc: sta...@dpdk.org; Alexander Kozyrev <akozy...@mellanox.com>; Mohsin
> Shaikh <mohsinsha...@niometrics.com>
> Subject: [PATCH v2] net/mlx5: Allow configuring mlx5 port for TX only
>
> Configuring mlx5 port with 0 rx rings and 1 or more tx rings causes following
> error in dev_start:
> net_mlx5: port 1 cannot allocate RSS queue list (0)
> net_mlx5: port 1 reta config failed: Cannot allocate memory Skip
> mlx5_dev_configure_rss_reta() when there are no rx rings.
>
> Cc: sta...@dpdk.org
> Signed-off-by: Mohsin Shaikh <mohsinsha...@niometrics.com>
> ---
>
> v2: Fix coding style issue COMMIT_LOG_LONG_LINE
>
> ---
> drivers/net/mlx5/mlx5_ethdev.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
> index d7d3bc7..1d443c1 100644
> --- a/drivers/net/mlx5/mlx5_ethdev.c
> +++ b/drivers/net/mlx5/mlx5_ethdev.c
> @@ -463,7 +463,7 @@ struct ethtool_link_settings {
> unsigned int *rss_queue_arr = NULL;
> unsigned int rss_queue_n = 0;
>
> - if (priv->skip_default_rss_reta)
> + if (priv->skip_default_rss_reta || !rxqs_n)
> return ret;
> rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
> if (!rss_queue_arr) {
> --
> 1.8.3.1
